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Software · head to head

Flagsmith vs LaunchDarkly

Flagsmith logo

Flagsmith

Software

Open-source feature flag and remote config platform

From
Free
Rated
-
Full reviewWebsite
LaunchDarkly logo

LaunchDarkly

Software

Ship fast. Rest easy.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Flagsmith the Free plan supports only a single team member, limiting collaboration for small teams.; LaunchDarkly pricing scales rapidly with monthly active users, becoming expensive at scale
  • They diverge on capability: Flagsmith covers Segments, LaunchDarkly covers Progressive rollouts.

Where they differ

Only the attributes on which Flagsmith and LaunchDarkly actually diverge.

Attributes where Flagsmith and LaunchDarkly differ
AttributeFlagsmithLaunchDarkly
Pricing modelfreemiumUnknown
Platformsweb, apiWeb, Cloud, APIs
FoundedUnknown2014

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Flagsmith

  • Segments
  • Scheduled flags
  • SDKs
  • SAML/SSO

Only in LaunchDarkly

  • Progressive rollouts
  • User targeting
  • Kill switches
  • Audit log
  • Multi-environment
  • SDKs for all platforms
  • Jira
  • Slack

Both cover

  • Feature flags
  • A/B testing

What people use each for

The jobs each tool is most often brought in to do.

Flagsmith

  • Gradual feature rollouts across environmentsnot LaunchDarkly
  • Remote configuration without redeploying codenot LaunchDarkly
  • Running A/B tests tied to feature flagsnot LaunchDarkly
  • Self-hosting feature flags for data residency requirementsnot LaunchDarkly

LaunchDarkly

  • Progressive deliverynot Flagsmith
  • Feature experimentationnot Flagsmith
  • Risk mitigationnot Flagsmith
  • Performance optimizationnot Flagsmith
  • Infrastructure migrationnot Flagsmith

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Flagsmith

  • The Free plan supports only a single team member, limiting collaboration for small teams.
  • Exceeding request limits triggers overage charges after a one-time 30-day grace period.
  • Enterprise-grade SSO and governance are locked behind the Scale-Up and Enterprise tiers.
  • Self-hosting requires operating and updating the platform yourself, unlike a fully managed SaaS competitor.

LaunchDarkly

  • Pricing scales rapidly with monthly active users, becoming expensive at scale
  • Limited seats for engineers on standard plans, forcing upgrade to enterprise
  • Advanced features like experimentation and audit logs require higher-tier plans
  • Occasional reliability issues and backend delays reported by users

Pricing, plan by plan

Flagsmith

Free
  • FreeFree
    • Up to 50,000 requests/month
    • 1 team member
    • Unlimited feature flags, environments, identities and segments
  • Start-Up$45/month
    • Up to 1,000,000 requests/month
    • 3 team members
    • Scheduled flags, 2FA, A/B testing, integrations, email support
  • Scale-Up$300/month
    • 5,000,000+ requests/month
    • 5-20 team members
    • SAML/SSO, governance features, priority support

LaunchDarkly

Free
  • DeveloperFree
    • Unlimited seats
    • Unlimited feature flags
    • A/B tests and experiments
  • Foundation$undefined/mo
    • $12 per connection
    • $10 per 1K MAU
    • Targeted segmentation
  • Enterprise$undefined/mo
    • Custom pricing
    • Advanced automation
    • Compliance features

Which should you pick?

Choose Flagsmith if

  • You need segments.
  • You want to start without paying.
  • You work on web, api.
  • You also want scheduled flags.
Flagsmith review

Choose LaunchDarkly if

  • You need progressive rollouts.
  • You want to start without paying.
  • You work on Web, Cloud, APIs.
  • You also want user targeting.
LaunchDarkly review

Questions people ask

Is Flagsmith or LaunchDarkly better?
Neither clearly leads. Flagsmith starts at Free and LaunchDarkly at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flagsmith or LaunchDarkly?
Flagsmith starts at Free and LaunchDarkly at Free.
Does Flagsmith or LaunchDarkly run on more platforms?
Flagsmith runs on web, api. LaunchDarkly runs on Web, Cloud, APIs.
Can I use Flagsmith for free?
Both have a free tier, so you can try either at no cost before committing.
What is Flagsmith best used for?
Flagsmith is most often used for gradual feature rollouts across environments, remote configuration without redeploying code, running a/b tests tied to feature flags, self-hosting feature flags for data residency requirements. Of those, gradual feature rollouts across environments and remote configuration without redeploying code are not what LaunchDarkly is typically brought in for.
What can Flagsmith do that LaunchDarkly cannot?
Flagsmith covers Segments, Scheduled flags, SDKs, SAML/SSO. LaunchDarkly covers Progressive rollouts, User targeting, Kill switches, Audit log. Both handle Feature flags, A/B testing.

Answered from the vendors’ own pages

Flagsmith: What does Flagsmith cost?

Flagsmith has a Free plan, a Start-Up plan from $40-45/month, a Scale-Up plan from $250-300/month, and custom Enterprise pricing.

Source
LaunchDarkly: What does the free Developer plan include?

The free Developer plan includes unlimited seats, unlimited feature flags, A/B tests and experiments, 30 SDKs, 10 million logs and traces, 5,000 session replays and errors, and 14 days of data retention.

Source
Flagsmith: Is there a free plan, and what are its limits?

The Free plan supports up to 50,000 requests per month and 1 team member, with unlimited feature flags, environments, identities and segments.

Source
LaunchDarkly: How does LaunchDarkly pricing scale?

Foundation plan pricing is $12 per connection plus $10 per 1,000 Monthly Active Users (MAU). Enterprise and Guardian plans have custom pricing based on usage, advanced features, and compliance requirements.

Source
Flagsmith: How is usage metered?

Usage is metered by monthly API requests; exceeding a plan's limit triggers overage charges starting around $50 per million requests, with a 30-day grace period the first time a paid plan exceeds its limit.

Source
LaunchDarkly: Does LaunchDarkly integrate with Jira and Slack?

Yes, LaunchDarkly integrates with Jira Cloud, allowing you to link feature flags to Jira issues and create issues from observability data. It also integrates with Slack for flag notifications and allows authorized members to trigger flag changes from Slack.

Source
LaunchDarkly: What is dark launching and how does LaunchDarkly enable it?

Dark launching keeps code changes hidden in production until ready to enable. LaunchDarkly enables this through feature flags that let teams safely test code in production before rolling out to users.

Source
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